Intake Port Flow Data Comparison BTR Performance's Stage 2 Cylinder Head Upgrade (CFM) Caldwell Cylinder Head Upgrade (CFM) Hennessey Cylinder Head Upgrade (CFM) 0.100 n/a 61 62 0.200 122 125 122 0.300 181 178 179 0.400 224 214 228 0.500 261 247 261 0.600 280 270 274 0.700 n/a n/a n/a

Flow numbers courtesy of Ben Treynor: www.treynor.com

Cylinder head flow number discussion on: Viperclub.org.

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